"Things like Pelosi and San Francisco and high taxes and so forth, and frankly even diversity, which is a subtle dig and something that will appeal to people who are actually not interested in diversity, and that's going to be true about some of the folks in that district," said Paul Holland, Silicon Valley venture capitalist and political commentator.

Polls show it's a tight race between Ossoff and Republican Karen Handel, so expect more ads. Spending already tops $30 million, making this the most expensive house race in American history.